From 2008 to 2011, the three-time All-Star was among the most effective closers in the majors, saving 163 games in that span. He helped lead San Francisco to the 2010 World Series title with 48 regular season and six postseason saves.

But during the 2012 season, Wilson appeared in only two games before having Tommy John surgery. It was the second time he has had the ligament-replacement procedure on his pitching elbow. The team nontendered him after the season, and he was unable to land a free agent deal.